/Engine/Source/Runtime/Engine/Public/WorldPartition/RuntimeSpatialHash/RuntimeSpatialHashGridHelper.h
Runs a function on all intersecting cells for the provided spherical sector
the number of intersecting cells
int32 ForEachIntersectingCells ( const [FSphericalSector](API\Runtime\Engine\WorldPartition\FSphericalSector) & InShape, [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< void(const FGridCellCoord &)> InOperation, int32 InStartLevel ) const